I'm currently beta testing for their Gamemaker. I gotta admit, it's pretty shabby, but it's got some good points. The output is excellent, it's got 3D capabilities, smooth scrolling, an awesome feature which lets you walk across a 3D-ish landscape (think Starfox for SNES) and I believe it can go fullscreen. Sprites, rooms, everything. The lot. Imagine a better version of Klik and Play... okay, now turn the monitor upside down and rearrange the interface so it makes no sense at all. Working with the program is horrible! I've never seen anything so bad in my life! Constant divisions by zero, 'access violations' and no previewing of anything. There's no help manual either. Go ahead, scream for mercy, you won't get it.
Now this certainly won't be the last time I comment on this program. I'd be shocked if anyone paid $15 for this. For a PC app, sure, but this just isn't up to Mac standards... ugh...