59. The Elder Scrolls IV: Oblivion (Bethesda Softworks, 2006)
58. Tyrian 2000 (Eclipse Software, 2000)
57. Thief Gold (Looking Glass Studios, 1998)
Metal Gear may have popularized the genre, but Looking Glass's Thief is without a doubt my favorite stealth game franchise, primarily because it carries the tension of the genre so well - you were sticking to shadows every step of the way, glancing over your shoulder for enemies, and using any tricks or hidden passages you could find to avoid being seen (or make a quick escape if you were). The grim fantasy setting and eerie architecture only added to the mood, as well as giving you some unique and fantastic tools for the job - from moss arrows (quieting your footsteps on metal and stone floors) to rope arrows to flash bombs and gas mines, you had plenty of options to accommodate your particular gameplay style. Add multiple difficulty settings on top, each with their own mission objectives, and you have a game with plenty of replay value as well. To say nothing of some of the brilliant fan-made missions and level packs out there.
56. Shin Megami Tensei: Nocturne (Atlus, 2004)
55. The World Ends With You (Square Enix/Jupiter, 2008)
54. Metal Gear Solid (Konami, 1998)
53. The Legend of Zelda; Link's Awakening (Nintendo, 1993)
52. Dust: An Elysian Tail (Humble Hearts, 2012)
51. Mischief Makers (Treasure, 1997)
The first Treasure game I ever played, and once I did, I was hooked on the company for life. Equal parts over the top silly and awesome, the game has you playing as Marina Liteyears, a hyper-strong jet-propelled robotic maid out to rescue Professor Theo from his kidnappers, the Clancer army. The game's mechanics center on grabbing, shaking and throwing items to a variety of effects - grabbing missiles out of the air, shaking them to make them larger, and throwing them back at your enemies to name just one. Tossing enemies into one another, throwing bombs and items into a pot then shaking to "combine" them into one larger item to name a couple more. It even features some delightfully silly stages like riding a giant bee, outrunning a tidal wave on a tricycle and the ever-awesome missile surfing stage (pictured), as well as boss fights against some truly outlandish boss monsters. Hell, there's even a time trial system and a hidden gold gem in each stage that extends the ending cinematic slightly, giving it some considerable replay value as well. Another game that should be rereleased to a wider audience but still hasn't for some reason...