It's rough when a beloved game is not available for purchase on digital storefronts. Old games can not only be hard to track down, but they can also cost an arm and a leg. Preservation is something the gaming industry is still struggling with, and that disregard for preservation could make certain titles disappear for good.

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Case in point: classic works of art that were not preserved properly are now lost to time such as the  Lon Cheney film London After Midnight or William Shakespeare's The History of Cardenio. Thankfully, these classic games are still available for purchase and are well worth a look.

10 Tetris Can Be Played On Almost Every Platform

Tetris Multiplayer Cropped

Tetris has a timeless quality. Elegant in its simplicity and endlessly challenging, Tetris is still just as much fun to play now as it was back in 1984. This mechanic has seen several twists and different approaches, and even they're well worth a try. Capcom added Disney characters and "magical" pentomino pieces in Magical Tetris Challenge while Sega added a dash of Puyo Puyo into the mix with Puyo Puyo Tetris. It's been ported to almost every conceivable gaming platform from the likes of Nintendo, Sony, and Microsoft. People can even play it on their phones.

9 Castlevania Symphony of the Night Is On PS4 And Is Backwards Compatible With Xbox

Alucard, son of Dracula holding a sword in Castlevania: Symphony of the Night

Symphony of the Night is the game that forever changed how Castlevania would approach its 2D entries. With the exception of Simon's Quest, previous entries followed the standard level by level structure of their contemporaries. Symphony of the Night deviated from this by giving players a huge interconnected world that would gradually open up as they gained new abilities. Depending on how much of the castle the player uncovered, the game had four different endings. While snagging an original copy may be difficult, Symphony has seen a re-release on the PlayStation Network, Xbox Live Arcade, and in a PS4 collection called Castlevania Requiem.

8 Perfect Dark Is Available on Xbox Live

Perfect Dark

Goldeneye 007 was a tough act for Rare to follow. After having their license to kill revoked from EON Productions, the team was forced to go back to the drawing board for their next FPS. Free from the more restrictive Bond property, Rare had the opportunity to take on more outlandish settings with characters that were literally out of this world.

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Perfect Dark refined the formula established in Goldeneye with a much more fleshed-out single-player campaign and added multiplayer options. A superb HD remaster was released on Xbox Live Arcade and through Rare's compilation disc, Rare Replay.

7 Sonic The Hedgehog 2 Is On Multiple Platforms

The chemical plant level from Sonic 2

Sonic the Hedgehog 2 introduced many elements that would become traditions in the series. It was the first game in the series to feature Tails, who served as the default 2nd player character. It was also the entry that bumped the number of chaos emeralds from six to seven, making it possible to unlock Sonic's super form and get the true ending.

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Sonic 2 also sports some of the most iconic zones and songs in the series such as the chemical plant and casino zones. All of this combines to make what may be one of the finest entries in the series.

6 The Legend of Zelda Ocarina Of Time Has Been Added To The Nintendo Switch

Legend of Zelda Ocarina of Time Link riding Epona

The first fully 3D entry in the series, Ocarina of Time's influence in the industry cannot be disputed. The third dimension provided players with a level of interactivity and immersion that was lacking in the previous Zelda entries. Though it shows its age in the controls and visuals, the music and clever dungeon design still stand the test of time. The game has seen rereleases on multiple platforms such as the GameCube, Wii, and 3DS. Ocarina was thankfully one of the Nintendo 64 titles to be confirmed to the Nintendo Switch Online service.

5 Chrono Trigger Is Available On Steam

Chrono Trigger original characters

With a unique cast of characters, an intriguing time-travel plot, and multiple potential conclusions, Square’s Chrono Trigger breathed new life in a genre that was finally starting to get some recognition in Western territories. The game encourages multiple playthroughs with 12 different possible endings depending on the choices the player makes and when they fight the final boss.

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The initial re-release on Steam was full of dubious artistic choices and game-breaking bugs, but following multiple patches from Square Enix, it might now be the definitive way to experience this classic.

4 Monkey Island 2: LeChuck's Revenge Has Been Remastered On Many Platforms

Monkey Island 2 Cropped

Monkey Island 2: LeChuck's Revenge expanded on the world and gave players three different islands with puzzles that could be solved in any order. While darker, LeChuck's Revenge still maintained the humor of the original. The game also boasted a much more cinematic feel than the first entry thanks to the scanned hand-drawn VGA art and dynamic music courtesy of iMUSE. A special edition of the game was released to PlayStation 3, Xbox 360, PC, and iOS devices. The special edition is still currently available on Steam and players can switch between the new version and the old version with the press of a button.

3 Fallout 1 & 2 Provide Players With A World To Lose Themselves In

Fallout 1 Brotherhood of Steel

The first two entries of the Fallout series were developed by a division within Interplay known as Black Isle Studios. Fallout gave players a world they could truly lose themselves in thanks to its unique setting, dark humor, and distinct characters. Players could philosophize and debate with the interesting and verbose inhabitants of the wasteland, or just blow them to pieces if they wished.

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Key gameplay features that made the first game stand out against its competitors were the traits system that gave players positive and negative effects, and the V.A.T.S combat system. The first two Fallout titles are available for purchase on Steam for the low price of $9.99 each.

2 Half-Life Is Still Available on Valve's Steam

Half Life Cropped

Valve pushed the boundaries of video game narrative and first-person shooters with their debut title. Half-Life boasted a much more complex plot than other shooters on the market such as Quake - all without sacrificing player control or breaking from the first-person perspective. The game was re-released on Steam and even remade as Black Mesa. While the trial and error platforming in Xen is much less palatable now than in 1998, the puzzles weaponry and seamless mixture of story and gameplay make the original an experience that every FPS fan should check out.

1 Super Mario World Is Pure Platforming Bliss

Super Mario World Cropped

Super Mario World is the ultimate refinement of the formula that Shigeru Miyamoto and his team started with the original Super Mario Bros. It expands upon the map screen from Super Mario Bros 3, adds several quality of life features, some new moves and powerups, and even a new character that changes how players approach a level. Where the secrets in SMB3 allowed players to skip sections of the game, World's secrets gave players even more content to enjoy. Throw in the upgraded visuals and sound from the SNES hardware and the end result is nothing short of pure platforming bliss.

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