Read-only repo containing the packages built for android 5, that were previously hosted on bintray.com.
To be able to install these packages in termux for android 5 you need
to edit $PREFIX/etc/apt/sources.list.d/game.list and change from:
deb https://dl.bintray.com/grimler/game-packages-21 games stable
to
deb https://termux.dev/game-packages-21-bin games stable