Chronicles of Mystara is a classic arcade brawler from the 90s. It contains two games, Tower of Doom and Shadow Over Mystara. They are remarkable in that they both stand up remarkably well for being nearly 20 years old. Branching paths, level ups, weapon upgrades, shopping... Basically these games, for their time, and even now, do a fantastic job of capturing much of the Dungeons and Dragons formula.
That being said, these games run on the Advanced Dungeons and Dragons (AD&D) rules, so if you play a character who casts spells, don't expect to be able to blast away willy-nilly. Spells a ultra-powerful abilities that are extremely limited in their use until the party makes camp for the night, and this only happens at set story moments in the game. You don't get to choose.
All in all, it's a fantastic game.