Having played for a while now, here some remarks about Hero-U:
- It’s completely lacking in the point-n-click adventure department
- It’s fairly light in the RPG department, but lots of activities are governed by your character’s skills
- It does a pretty good job at simulating an environment (just not a very big one) and giving the player free reign, constrained only by time and (lack of) skills.
The biggest point it has going for it (aside from the Sauerbraten) is its atmosphere: good-natured, light-hearted, perhaps a bit silly even, with the occasional earnest undercurrent here or there. Quite a difference from most of today’s games with their serious themes and ambiguous morals.