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Game Development · head to head

MonoGame vs SolveSpace

MonoGame logo

MonoGame

Game Development

Create games using C# and MonoGame

From
Free
Rated
-
Full reviewWebsite
S

SolveSpace

CAD

Open source parametric CAD with a constraint solver in a few megabytes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: MonoGame console targets for PlayStation 4 and 5, Xbox One and Nintendo Switch require platform authorisation rather than being openly available; SolveSpace the in-house geometry kernel fails on complex boolean operations and fillets, and the failure is sometimes silent bad geometry rather than an error message, so models must be checked before export or manufacture.
  • They diverge on capability: MonoGame covers C# language support, SolveSpace covers Constraint solver.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which MonoGame and SolveSpace actually diverge.

Attributes where MonoGame and SolveSpace differ
AttributeMonoGameSolveSpace
Pricing modelfreeOpen source, no licence fee
PlatformsWindows, Macos, Linux, Ios, Android, Playstation, XboxWindows, macOS, Linux
CategoryGame DevelopmentCAD
Founded2009Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in MonoGame

  • C# language support
  • Graphics rendering
  • Audio engine
  • Physics integration
  • Content pipeline
  • Input handling
  • Sprite system
  • 2D and 3D support

Only in SolveSpace

  • Constraint solver
  • Solid modelling
  • Assemblies
  • Export formats
  • Cross-platform
  • Small footprint

What people use each for

The jobs each tool is most often brought in to do.

MonoGame

  • Cross-platform game development in C# and .NETnot SolveSpace
  • Shipping to Windows, macOS and Linux from one codebasenot SolveSpace
  • Mobile releases on Android, iOS and iPadOSnot SolveSpace
  • Commercial indie titles with no royalty or runtime feenot SolveSpace

SolveSpace

  • Designing 3D printed parts on a machine that cannot run mainstream CADnot MonoGame
  • Teaching constraint-based parametric modelling without buying licences for a classroomnot MonoGame
  • Checking that a mechanical linkage moves as intended before cutting metalnot MonoGame
  • Producing dimensionally accurate STEP or STL output from a small open source toolchainnot MonoGame

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

MonoGame

  • Console targets for PlayStation 4 and 5, Xbox One and Nintendo Switch require platform authorisation rather than being openly available
  • A code-first framework in C# with no bundled editor or visual scene tooling

SolveSpace

  • The in-house geometry kernel fails on complex boolean operations and fillets, and the failure is sometimes silent bad geometry rather than an error message, so models must be checked before export or manufacture.
  • There is no proper drawing and dimensioning workflow, so manufacturing documentation has to be produced in another application.
  • Development is volunteer-led and intermittent; long gaps between releases are normal and there is no support contract available at any price.
  • Assembly-level import of external CAD is very limited, so it does not fit a supply chain that exchanges native or assembly-level models with suppliers.
  • The interface follows its own conventions rather than mainstream CAD ones, so existing SolidWorks or Fusion users spend time unlearning habits for a tool with a lower ceiling.

Pricing, plan by plan

MonoGame

Free
  • FreeFree
    • Full framework
    • C# support
    • Cross-platform

SolveSpace

Free
  • SolveSpaceFree
    • Full application under the GPL
    • No seat limit
    • Windows, macOS and Linux builds

Which should you pick?

Choose MonoGame if

  • You need c# language support.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android, Playstation, Xbox.
  • You also want graphics rendering.
MonoGame review

Choose SolveSpace if

  • You need constraint solver.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want solid modelling.
SolveSpace review

Questions people ask

Is MonoGame or SolveSpace better?
Neither clearly leads. MonoGame starts at Free and SolveSpace at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, MonoGame or SolveSpace?
MonoGame starts at Free and SolveSpace at Free.
Does MonoGame or SolveSpace run on more platforms?
MonoGame runs on Windows, Macos, Linux, Ios, Android, Playstation, Xbox. SolveSpace runs on Windows, macOS, Linux.
Can I use MonoGame for free?
Both have a free tier, so you can try either at no cost before committing.
What is MonoGame best used for?
MonoGame is most often used for cross-platform game development in c# and .net, shipping to windows, macos and linux from one codebase, mobile releases on android, ios and ipados, commercial indie titles with no royalty or runtime fee. Of those, cross-platform game development in c# and .net and shipping to windows, macos and linux from one codebase are not what SolveSpace is typically brought in for.
What can MonoGame do that SolveSpace cannot?
MonoGame covers C# language support, Graphics rendering, Audio engine, Physics integration. SolveSpace covers Constraint solver, Solid modelling, Assemblies, Export formats.

Answered from the vendors’ own pages

MonoGame: How much does MonoGame cost?

MonoGame is completely free with no subscription model, royalty payments, licensing costs, or runtime fees.

Source
SolveSpace: Is it really free for commercial work?

Yes. It is released under the GPL with no licence fee and no seat limit. Support is community only.

MonoGame: What funding model does MonoGame use?

MonoGame Foundation is a non-profit 501(c)(3) organization supported by voluntary community donations rather than user fees.

Source
SolveSpace: Can it replace Fusion 360 or SolidWorks?

No. It handles parts and simple assemblies well. Complex geometry, drawings and supply chain interoperability are outside its range.

SolveSpace: What hardware does it need?

Very little. It runs on old laptops and small Linux machines where mainstream CAD will not start.

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