For terminal I recommend
https://play.google.com/store/apps/d...rminalemulator
Shell Terminal Emulator
OR Terminal Emulator
https://play.google.com/store/apps/d...al.androidterm
Openttd as well as other opensource games are available for the platform
https://play.google.com/store/apps/d...rg.openttd.sdl
Supertux
https://play.google.com/store/apps/d...rgik.supertux2
Openarena
https://play.google.com/store/apps/d....openarena.sdl