So here's
Legend of Grimrock, a dungeon crawler of the old school with a new, high-res coat of paint. It involves customizing your party using different races, classes, skills and equipment, and also square-based movement, saving and loading at any time, real-time combat with cooldowns for attacks, fiendish puzzles, falling down pits, hidden switches in the walls, and carrying torches around.
It's also really hard - the combat as well as the puzzles - and incredibly addictive. You really should go play it if you enjoy any sort of RPG, it's only like 13 bucks on gog.com. The game has a degree of quality that I'm not used to seeing; not only does it look great, but it runs smoothly, responds quickly, and there are almost no graphical glitches anywhere - which is essential if you're going to be scrutinizing every wall for symbols or switches.
I'm hacking my way through the dungeons with a party of a minotaur fighter specializing in unarmed and athletics, a human fighter specializing in armor and swords, an insectoid mage specializing in ice and earth magic, and a human rogue specializing in thrown and missile weapons. Skill progression is spot on, and so far I've been able to handle every monster the game throws at me, although not without retrying a couple of times.
Come on, go play it!
I knew I might have been playing too long when I closed the game and found the next day's QC already posted.