No, you're not. Just like what ptitSeb said in the previous page, this game gl code is clearly not mobile GPU friendly. A perfect port would rewrite that part. It's way too much works for me currently.
While the fps are low, the game is playable. Good enough
@sebt3 : On github in CMakeLists.txt I see there are options like ENABLE_OPENGLES2. There are also flags regarding Ubuntu Touch devices, so I believe mobile GPUs should be better supported.