I don't know if it's done on purpose, but the latest game from Thomas was Alone creator is also easy to 100%! In 2-3 hours, you'll have discovered all of the secrets the game's subway has to offer.

This affordable point-and-click can be 100% in 2-3 hours.There is a surprising high amount of achievements for once (30), yet it's still easy peasy to get them all, even with no guide.Plus, it's good.

If the intrigue is not enough to keep you going, the achievements you get every 2 minutes should be a good motivator to get you through the end. Takes 15 minutes to complete (and that's if you read!)

From the same creator as Zenge, this one takes 1 more hour to complete (1+1 = 2 in case you didn't know/ haven't read my Zenge review), and you may need to use a guide for one tricky achievement.

This zen game will soothe you with its artsyle, its mucis, its slow pace and its one achievement. A bit more than an hour.

The time to get all achievements is inversely proportional to the length of the title. Under an hour with the right guide.

You can finish this game in 20-ish minutes, and then you let it run one hour to get the last achievement. $1 and 20 minutes of your life for an easy 100%: you cannot find a better deal elsewhere!

A peculiar mix of puzzle, platforming and basketball. You can get all achievements under one hour in one run; two runs if you mess up, but let's be real, the main selling point is its title.

Surpsingly easy to 100% for a game with an "Unachievable" achievement.

People keep saying that this game is a pale Portal clone, but can you get 100% achievements in Portal under 3 hours? Yeah, that's what I thought.