Update 4/18/17 - These instructions were older, Tux Junior has been tested to built on Ubuntu 16.4 with newer GCC.
Check which GCC is installed. Tux Junior should build with GCC/G++ at 4.6. Newer gcc gets hung up with older squirrel pieces.
@BOX:~/boombox/supratux/tuxjunior$ gcc --version
Preview Release, Git Tagged V.99
World One : : Water Ice Island
Tux Junior is our penguin themed side-scroll platform game aimed at kids of all ages. Developed for both learning and gameplay, Tux Junior is easy to modify and fun to play. The game engine under Tux Junior was started from a 2007 developer branch of the smash hit game, SuperTux. While the engine remains vintage SuperTux, much of the game assets and levels have been reworked. Thanks to the efforts of many talented open source programmers, we've been given the tools to create and share this little penguin game. Released under the GPL licence you are free to modify and share Tux Junior with others.
The primary goal of this project is to build a kid friendly game while learning a few tricks along the way. Absent more developers, it is likely that Tux Junior will never be more than some hacker tinker code ... but you never know.