Current blockers for this are:

1) The game "data" itself is free (CC0), but that isn't the complete game, just the assets and configuration for the game engine.
The game engine "Torque3D" is "open source" but has many libraries bundled in it which appear to be non-free e.g...

@/* * Copyright 2006 Sony Computer Entertainment Inc. * * Licensed under the SCEA Shared Source License, Version 1.0 (the "License"); you may not use this * file except in compliance with the License. You may obtain a copy of the License at: * http://research.scea.com/scea_shared_source_license.html * * Unless required by applicable law or agreed to in writing, software distributed under the License * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or * implied. See the License for the specific language governing permissions and limitations under the * License.
*/@

@/* * OPCODE - Optimized Collision Detection * Copyright (C) 2001 Pierre Terdiman * Homepage: http://www.codercorner.com/Opcode.htm
*/@

2) It is incompatible with GCC 6 and won't build properly. I tried patching several things to see if I could get it to build, but it will be awhile before they update their code enough to make this build on any recent version.

- For sake of completion here is the PKGBUILD with hacks I have applied to make it "almost build", it manages to get to almost 50% of the build process before failing due to an error in libwayland. I presume this will be fixed upstream at some point.

Since usptream depends on non-free licensed code to compile I am closing this ticket. :/