Kevin Glass

Ball 4K is a 3D ball-rolling game where players navigate through levels by flipping switches and avoiding falls. It's free and includes jumping mechanics.

Mac-compatible arcade game, now available for free.

Neb 4K is a challenging yet entertaining retro-style game where players must ascend a tower through warp points while avoiding hazardous red squares. It is a free-to-play game suitable for those seeking a casual experience with old-school graphics.

Phys2D is a Java-based 2D physics engine available as free open-source software. BSD License governs its distribution and usage.

Slick is an open source game library that aids in game creation and optimization. It is available for free and can be used to create robust games.