• SDL 2.0.10
• Ruby 2.3.8
• Gosu 0.14.5
• OpenGL 0.9.2 or 0.10.0 (not sure)
• Chipmunk 6.1.3.4 (untested)
• Ashton 0.1.6 (untested)
• Texplay 0.4.4.pre (untested)
• Requires macOS 10.14 Mojave

• SDL 2.0.4
• Ruby 2.3.1
• Gosu 0.10.8
• OpenGL 0.9.2 (or 0.10.0.pre1? Not sure)
• Chipmunk 6.1.3.4
• Ashton 0.1.6
• Texplay 0.4.4.pre
• Requires OS X 10.7

• SDL 2.0.3 --HEAD (not sure which commit exactly)
• Ruby 2.2.1
• Gosu 0.9.2
• OpenGL 0.9.2
• Chipmunk 6.1.3.4
• Ashton 0.1.6
• Texplay 0.4.4.pre
• Requires OS X 10.7

• Ruby 2.1.2p95
• Gosu 0.7.50
• OpenGL 0.8.0 (or 0.9.0; not sure)
• Chipmunk 6.1.3.1
• Ashton 0.1.3
• Texplay 0.4.4 (the binary for PowerPC is missing, contact me if this is an issue)
• Requires 10.8 for 64-bit Intel, 10.6 for 32-bit Intel, 10.5 for 32-bit PowerPC

• Ruby 2.0.0p247
• Gosu 0.7.48
• Ruby-OpenGL 2 0.60.6
• Chipmunk 5.3.4.5
• TexPlay 0.4.3
• Requires 10.8 for 64-bit Intel, 10.6 for 32-bit Intel, 10.5 for 32-bit PowerPC