Choosing a game engine is one of the earliest and most consequential decisions in any game project. It determines your programming language, your available talent pool, your deployment pipeline, your licensing costs, and in many cases, the upper bound of what your game can achieve visually and technically.
The problem with most engine comparison articles is that they list features in isolation. Feature lists do not help you decide. What helps is understanding how each engine performs in the context of a real project, with real constraints around budget, timeline, team size, and target platform.
This guide compares the four engines we see most often in client work and industry discussions: Unity, Unreal Engine, Godot, and GameMaker. For each, we cover what it does well, where it struggles, what it costs, and who it is best suited for.
If you want a personalised recommendation based on your specific project, try our Game Engine Comparison Tool. It takes about two minutes and weighs your answers against the same criteria we use when advising clients.
Unity
Language: C# Current version: Unity 6 (2024 LTS) Licence: Free up to $200K revenue; Plus at $399/year up to $200K; Pro at $2,040/year above $200K Platforms: iOS, Android, Windows, macOS, Linux, WebGL, PS4/PS5, Xbox, Switch, VR/AR
What Unity does well
Unity's core strength is breadth. It deploys to more platforms than any other engine, and it does so from a single codebase. If your game needs to ship on mobile, PC, console, and web, Unity is the path of least resistance.
For 2D games, Unity is arguably the strongest option. Its Tilemap system, 2D physics, sprite animation tools, and 2D lighting (introduced in URP) are mature and well-documented. Most successful 2D indie games of the past decade were built in Unity: Hollow Knight, Cuphead, Celeste, and Ori and the Blind Forest.
The Asset Store is a genuine accelerator for small teams. Pre-built networking solutions (FishNet, Mirror, Photon), UI frameworks, shader packs, and complete game templates can save weeks of development time. The ecosystem is larger than any competitor's.
C# is a practical choice for game development. It is strongly typed, has excellent tooling, and is easier to hire for than C++. Most game programmers can be productive in C# within days, which matters when you are building a team or onboarding contractors.
Unity 6 brought meaningful improvements to rendering (adaptive probe volumes, GPU Resident Drawer), the new multiplayer framework (Netcode for GameObjects and Entities), and stability of the Entity Component System for data-oriented design. If you tried Unity's DOTS stack in 2022 and found it immature, it is worth revisiting.
Where Unity struggles
Unity's 3D rendering, while competent, does not match Unreal's out-of-the-box visual fidelity. Achieving photorealistic results in Unity requires significant shader work and artist expertise. For AAA-quality visuals, Unreal has a clear lead.
The engine's history of frequent API changes has frustrated developers. Features like the old Input Manager vs the new Input System, the legacy rendering pipeline vs URP vs HDRP, and the ongoing transition to DOTS mean there are often two or three ways to do the same thing, not all of which are fully supported. Unity 6 has improved this, but the legacy of fragmentation persists in tutorials and community answers.
Unity's pricing model became a source of controversy in 2023 with the Runtime Fee announcement, which was subsequently revised. The current per-seat subscription model is straightforward, but the episode damaged trust with some developers. Worth noting for teams making long-term engine commitments.
Best for
Mobile games (2D and 3D), cross-platform deployment, 2D games of any complexity, indie and mid-tier 3D games, educational and serious games, AR/VR applications, live-service games with multiplayer requirements.
Unreal Engine
Language: C++, Blueprints (visual scripting) Current version: Unreal Engine 5.5 Licence: Free until $1M revenue; 5% royalty above $1M Platforms: Windows, macOS, Linux, iOS, Android, PS4/PS5, Xbox, Switch
What Unreal does well
Unreal Engine's rendering pipeline is the industry benchmark for real-time visual quality. Nanite (virtualised geometry), Lumen (global illumination), and MetaHuman (digital humans) produce results that no other engine matches without extensive custom work. If your game's selling point is visual fidelity, Unreal is the default choice.
Blueprints is genuinely useful. It is not a toy scripting system; entire commercial games have shipped using only Blueprints. For teams with strong artists and designers but limited programming resource, Blueprints allows non-programmers to build and iterate on gameplay logic. The combination of Blueprints for rapid prototyping and C++ for performance-critical systems is a proven workflow.
Unreal's tooling for large-scale projects is mature. World Partition (for open worlds), level streaming, the Sequencer (for cinematics), and the animation system (Control Rig, IK Retargeter) are production-grade tools that AAA studios rely on. If your project has hundreds of hours of content and dozens of team members, Unreal's project management tooling scales to meet that.
The royalty model is attractive for smaller studios. You pay nothing until your game earns $1 million in revenue. For most indie projects, Unreal is effectively free.
Where Unreal struggles
Mobile development in Unreal is possible but not its strength. The engine's rendering pipeline is designed for high-end hardware. Getting an Unreal game to run well on a mid-range Android phone requires significant optimisation work that you would not need in Unity or Godot. Draw call overhead, shader compilation times, and package sizes are all larger by default.
The learning curve is steep. C++ is a powerful but demanding language. Compile times are long. Debugging is harder than in C#. For small teams or solo developers, the overhead of Unreal's complexity can eat into productivity.
Iteration speed is slower than Unity for certain workflows. Hot reload in C++ is unreliable. Blueprint compilation can stall with large graphs. For rapid prototyping of gameplay mechanics, Unity's C# workflow typically allows faster iteration.
Unreal's 2D capabilities are limited. While it technically supports 2D through Paper2D, the plugin is no longer actively developed. If you are making a 2D game, Unreal is the wrong choice.
Best for
Visually ambitious 3D games, AAA and AA productions, open-world games, narrative-driven games with cinematic sequences, competitive shooters, games targeting PC and current-gen consoles, architectural visualisation and virtual production.
Godot
Language: GDScript, C#, C++, GDExtension Current version: Godot 4.4 Licence: Completely free, MIT licence, no royalties, no fees, no restrictions Platforms: Windows, macOS, Linux, iOS, Android, WebGL (console support via third-party solutions)
What Godot does well
Godot is free in the truest sense. MIT licence means no fees, no royalties, no usage tracking, no terms that can change. For developers who were burned by Unity's pricing controversy, this is a significant draw. You can modify the engine source code, ship commercial games, and owe nothing to anyone.
For 2D games, Godot is excellent. Its 2D engine is not a retrofit on top of a 3D renderer (as it effectively is in Unity and Unreal). Godot has a dedicated 2D rendering pipeline with its own physics, lighting, and coordinate system. This makes 2D development feel native rather than constrained.
GDScript is intentionally simple. It resembles Python in syntax and is designed specifically for game development. For solo developers, hobbyists, and small teams that want to prototype quickly without the overhead of C# or C++, GDScript removes friction. Godot 4 also supports C# through Mono, so teams with existing C# experience can use their preferred language.
The scene system is elegant. Everything in Godot is a scene, and scenes can be nested and instanced. This compositional approach is intuitive once learned and encourages modular design from the start.
The engine is lightweight. The editor is approximately 40MB. Projects compile quickly. Export templates are small. For web games and lightweight mobile games, Godot's footprint is an advantage.
Where Godot struggles
Console deployment is Godot's most significant gap. There is no official support for PlayStation, Xbox, or Nintendo Switch. Third-party solutions exist (such as W4 Games' console ports), but they add cost and complexity. If console is in your roadmap, this is a hard constraint.
Godot's 3D capabilities have improved dramatically in version 4, but they are still behind Unity and substantially behind Unreal. Complex 3D projects (open worlds, large-scale multiplayer, photorealistic rendering) will push against Godot's current limits.
The ecosystem is smaller. The asset library has fewer plugins, fewer tutorials, and fewer community-maintained tools than Unity's. Hiring Godot developers is harder because the talent pool is smaller. For commercial projects where you need to staff up quickly, this matters.
Documentation has improved but remains uneven. Core features are well-documented. Newer features and advanced use cases often rely on community tutorials or reading the source code.
Best for
2D games of any scope, lightweight 3D games, web games, jam games and prototypes, educational projects, developers who value open source and licensing freedom, solo developers and very small teams, projects with no console requirements.
GameMaker
Language: GML (GameMaker Language) Current version: GameMaker 2024.11 Licence: Free tier available; Creator at $4.99/month; Indie at $9.99/month; Enterprise pricing on request Platforms: Windows, macOS, Linux, iOS, Android, HTML5, PS4/PS5, Xbox, Switch
What GameMaker does well
GameMaker is the most accessible engine for 2D game development. Its room editor, sprite editor, and visual workflow are designed specifically for 2D and feel more intuitive than Unity's or Godot's general-purpose editors when working in two dimensions.
GML is simple enough for beginners but powerful enough for commercial games. Undertale, Hotline Miami, Hyper Light Drifter, and Katana Zero were all built in GameMaker. These are not trivial games; they have complex state machines, custom shaders, and polished gameplay feel.
GameMaker has legitimate console export support, unlike Godot. If you are making a 2D game that needs to ship on Switch, PlayStation, or Xbox, GameMaker handles the export pipeline.
The subscription pricing is low. For an indie developer, $9.99 per month for full platform export is significantly cheaper than Unity Pro.
Where GameMaker struggles
GameMaker is a 2D engine. It has some 3D capabilities, but they are rudimentary and not recommended for anything beyond simple experiments. If there is any chance your project needs 3D, choose a different engine.
GML is a proprietary language with no use outside GameMaker. Skills learned in GML do not transfer to other engines or general software development. For career development, C# (Unity/Godot) or C++ (Unreal) are more valuable.
Performance ceiling is lower than Unity, Unreal, or Godot for compute-heavy games. Particle-heavy shmups, physics simulations, or games with thousands of active entities will hit GameMaker's limits before they hit other engines'.
The community is smaller and skews hobbyist. Finding experienced GameMaker developers for a commercial project is harder than finding Unity or Unreal developers.
Best for
2D indie games, pixel art games, game jam entries, solo developers making their first commercial game, 2D games targeting console, developers who prioritise simplicity and fast iteration over engine flexibility.
How to Choose
The engine decision is not about which engine is "best." It is about which engine best fits your constraints. Here is how we think about it when advising clients:
Start with your platform. If you need console support, Unreal, Unity, or GameMaker. If you need web, Unity or Godot. If you need mobile as a primary platform, Unity is the strongest choice. If you only need PC, all four work.
Then consider your visual requirements. If the game's value proposition depends on visual fidelity (photorealistic environments, cinematic cutscenes, high-poly character models), Unreal is the right answer. For stylised 3D, Unity is more than capable. For 2D, Godot or GameMaker.
Then consider your team. What languages does your team know? What engines have they shipped on? A team of C++ veterans will be more productive in Unreal than in Unity, regardless of what a comparison chart says. A solo developer with Python experience will ramp up faster in Godot than in any other engine.
Then consider your budget. Unreal's royalty model means you pay nothing until success. Unity's subscription means you pay from day one but owe nothing on revenue. Godot and GameMaker (at the indie tier) have the lowest ongoing costs.
Then consider your timeline. Unity and GameMaker have the fastest prototyping workflows for their respective strengths (general-purpose and 2D). Unreal's iteration speed is slower but its built-in systems (animation, cinematics, world building) save time on large productions. Godot is fast for small projects but may require building tools that other engines provide out of the box.
Our Engine Comparison Tool walks you through these factors in a structured way and gives you a weighted recommendation. If you want to discuss your specific project, get in touch and we are happy to advise.
A Note on Custom Engines
Some teams consider building a custom engine, particularly for highly specialised games or when licensing terms are a concern. This is rarely the right choice unless you have a team of experienced engine programmers and a very specific technical requirement that no commercial engine meets.
The development cost of a custom engine, measured in years of engineering time, almost always exceeds the licensing cost of a commercial engine, even at scale. The exception is studios with an existing proprietary engine and the institutional knowledge to maintain it.
Our Experience
At Ocean View Games, we specialise in Unity development. We chose Unity because our work focuses on mobile games, cross-platform deployment, and live-service multiplayer, all areas where Unity's strengths align with client needs. Our team has shipped projects ranging from MMORPGs with FishNet networking to educational games for language preservation to procedurally generated strategy games on mobile.
That said, we are honest when Unity is not the right fit. If a client comes to us with a photorealistic first-person shooter targeting PC and console only, we will tell them to consider Unreal. If they are a solo developer making a 2D pixel art game with no multiplayer, Godot might be the better choice. The right engine is the one that serves the project, not the one the studio happens to prefer.
Need help choosing an engine or starting development? Get in touch to discuss your project, or try our Engine Comparison Tool for a quick recommendation.
Related Resources
- Game Engine Comparison Tool — Free interactive tool to find the best engine for your project.
- Unity 6 Technology Page — What's new in Unity 6 and how we use it.
- C# for Game Development — Why C# is our language of choice.
- Game Development Cost Estimator — See how engine choice affects project cost.
- Questions to Ask Before Starting a Game Project — Engine is just one of the decisions you need to make early.
- Building Reusable Game Frameworks in Unity — How we accelerate Unity development with modular frameworks.