BURLOW44  Won't launch on a PPC G4 running 10.5.1....the supertux icon shows up in the dock for a few seconds with the pulsing "active app" dot under it and then "unexpectedly quits".   
(Version 0.3.1)

DOUG S.  I've completed 19/20 of the levels, that being all of the main island and all of the second island, but I haven't completed the game. When I go to the bottom of the frozen make when I try to jump to that little island with two levels it instead puts me to the point where I can head to the right onto the bridge to the boat.

On the second island all the levels are beaten but there appears to be a single small island to the top right with one mushroom house I can't seem to get to.

What am I doing wrong? There is nothing about this on the site and it lists a 0.1 as the latest Mac version, which obviously isn't.  
(Version 0.3)

ANNMAIRE  This games is alot of fun.....i was actually looking for mario bros....and came across this game a couple of times i then finally decided to try it.....it is the same as mario the only difference is there is pinguin instead of mario.....it is really really run.....  
(Version 0.3)

JCTULL  This is a great game, open source or otherwise. For those of us from the side-scrolling era of game greats, like Super Mario Brothers, this is an excellent stand-in. I am glad to see that development progresses and that it is compiled as a universal binary. Runs great on my MBP C2D. Looking forward to Milestone 2.  
(Version 0.3)

G7  Maybe it is a good game, but I cannot tell it for sure, as it is impossible to download. For several days I am getting "Too many clients for /supertux/supertux-0.1.3-macosx-universal.dmg" message, from both mirrors. Maybe they should put it on a better server? Or create a torrent?

Or maybe it isn't the server's fault. Maybe the game is that popular? Every single Mac user is downloading it right now? And then, perhaps, he or she downloads it again for their friends, children and parents? Please, please stop downloading it for a moment, so that I could get it too ;))  
(Version 0.1.3u)

KRYSTOF VASA  It's a great game, but an Universal Binary release would be even better!  
(Version 0.1.3)

RYU  Great game...soooo much fun....nice little game you can have in small (between lessons) or large (free periods) doses :P  
(Version 0.1.3)

ANONYMOUS  I love this already and I'm only on the second level!  
(Version 0.1.3)

ANONYMOUS  Entertained me for months during boring sixth form lunchtimes.  
(Version 0.1.3)

ANONYMOUS  This game is the best but when is the 2 one comin' out?  
(Version 0.1.2)