Supertux

Supertux 0.6.1 (December 2019).

Requires keyboard or controller - no touchscreen support.

Requires QXCompositor for rotation (landscape) support.

Built and packaged on F(x)tec Pro¹ running Sailfish 3.2.

Includes my config file which I like for QWERTY Pro¹, but other devices/keyboards will most likely want to change resolution/zoom and keyboard map from the built-in setting menu.  

SuperTux is a free and open-source two-dimensional platform video game published under the GNU General Public License (GPL). The game was inspired by Nintendo's Super Mario Bros. series; instead of Mario, the hero in the game is Tux, the official mascot of the Linux kernel. Gameplay in SuperTux is similar to Super Mario Bros. Tux can jump under bonus blocks marked with question marks to gain coins or retrieve power-ups such as the egg, which makes Tux bigger. Other objects such as trampolines and invincibility granting stars can also be obtained from these blocks. Tux can defeat some bad guys by jumping on them, and most can be defeated or frozen by shooting flower power-ups, which let Tux shoot the flower's respective element. Currently, only the fire flower power-up is implemented in story mode but there are also ice flowers, which shoots bullets that can freeze bad guys and kill fire, earth flowers give out a light which can be used for lanterns and can give invincibility for a few seconds, and air flowers allow Tux to jump further and more quickly. The objective of each level is to get to the end, usually marked by checker-patterned poles. At the end of each world is a boss, such as the Yeti boss on Icy Island.