LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
Alien Shooter 2: Reloaded - Alien Shooter 2: Reloaded combines the elements of Role-playing, Top-down, Action, and Shooter.
FreeCAD - An open-source parametric 3D modeler
HELLDIVERS - Helldivers is an Adventure-based, Shoot em’up, Co-op, Single and Multiplayer video game developed by Arroshead Games Studios and published by Sony Computer Entertainment.
SketchUp - 3D for Everyone
Crimsonland - Crimsonland.com - a top-down shooter with a touch of RPG: gain XP, choose perks, unlock weapons, and blast your way through aliens, zombies, and lizard men. Coming soon to Steam and PS4!