I'm a really big fan of the "Metroidvania" style game, and I keep coming across games in that genre that I didn't know about. Most recently, I just finished Monster Tale - a very fun DS game in the style that also throws in a little Pokemon-esque monster raising. So what are some other good games in that style, any system, that are NOT part of the Metroid or Castlevania series? Here are some to get us started:
Tomba 1&2 - PS1 - The second game is fairly rare/sought after these days- the first one is as well to a lesser degree, mainly because you can get it on the PSN. You're a pink-haired caveman fighting pigs. It's as silly as it sounds, but a TON of fun - in addition to Metroidvania-style exploration and unlocking new areas by gaining abilities, it has a very nice quest system that really helps to keep you hooked. Both games are equally great so both are recommended if you can find them.
Strider (2014) - PS3/PS4/360/XBone/PC - I'll admit that I'm not that familiar with the old Strider games. I dabbled with some of the ports back in the day, but not enough for them to leave a real impression, and I can't say for certain if I've ever played the arcade game or not. But this newest game is a blast combining great combat and exploration with some really nice 2.5D graphics & a sufficiently thumping soundtrack.
Monster Tale - DS - The game that prompted this thread, Monster Tale is a very cute but deceptively challenging game. You befriend a monster at the beginning of the game and feed/give him different items to up his different stats and evolve him in different ways. You can switch between any of the unlocked "evolved" forms you've unlocked at any time, and each have their own stats & abilities to learn and master. Mastered abilities can be equipped regardless of the current form. Success requires you to use your own combat abilities in combination with the right support abilities from your monster. Fantastic graphics and a really stand-out soundtrack with a story that manages to be cute without being inane, my only knock against this one is the excessive amount of backtracking required. But that is easily overlooked because of everything else that the game does right.
So what are some others? I'll try to keep the OP updated - please, if you suggest one tell a little about it. I'm not just looking for a list of games in the genre, I could probably find that on wikipedia - I'm looking for really GOOD games that you would recommend!