While I'm at it, here are links to a bunch of other games that require some degree of thinking outside the box and adapting to changing rules:

Factory Balls and Factory Balls 2

Easy. Each level introduces new puzzle pieces, but no dramatic changes in the rules. The solutions are all inside the box, once you figure out what the rules are.

Aether

Easy. Requires solving some puzzles without any hints what the puzzle is or what a solution would look like. Solvabe just by trying random things until something happens.

Duck, think outside the flock

Medium. A series of puzzles, each of which has different rules.

me and the key

Medium. A series of puzzles, each of which has different rules.

Electric Box

Medium. Each level introduces new puzzle pieces, but no dramatic changes in the rules. The solutions are all inside the box, but you have to figure out how to put them together.

Dynamic Systems

Medium. Each level introduces new puzzle pieces, but no dramatic changes in the rules. The solutions are all inside the box, but you have to figure out how to put them together.

Casual Gameplay Escape

Hard! A series of puzzles, connected by other puzzles, each of which have different rules, and most of which have a counterintuitive solution. Hints about the solutions are cleverly hidden in the game. Hint: Gur cevagfperra ohggba vf lbhe sevraq. (rot13'd)

Take Something Literally

Hard. A series of puzzles, each of which has a deliberately counterintuitive, and often malevolent, solution. Don't worry if you can't solve all of them, some of the solutions require specific computer hardware or softwae to win.

The Impossible Quiz and The Impossible Quiz 2

Almost Impossible. A series of quiz questions and other challenges that have deliberately counterintuitive solutions. Some of the quiz questions are solvable only by trial and error. Some of the challenges require extremely fast reflexes. Many of the puzzles are blatantly evil. Do not expect to win this. You have been warned.

The rest of these games don't really fit with the theme of thinking outside the box and adapting to changing rules, but are unique enough to include in the list anyway:

Closure

Medium. A unique game, but the rules don't change much, except when new puzzle elements are introduced. The solutions are mostly inside the box.

Time Kufc

Medium. This game doesn't really belong in this list. The rules don't change much, except when new puzzle elements are introduced. The solutions are mostly inside the box.

Red Remover

Medium. This game doesn't really belong in this list. The rules don't change much, except when new puzzle elements are introduced. The solutions are mostly inside the box.

Shift, Shift 2, Shift 3, and Shift 4

Medium. This game doesn't really belong in this list. The rules don't change much, except when new puzzle elements are introduced. The solutions are mostly inside the box.

Exploit

Medium. Actually, this doesn't belong in this list at all. The rules don't change, and the solutions are all quite literally inside the box.

There are plenty of other good puzzle games I could link to, but they didn't really fit with the theme of thinking outside the box and adapting to changing rules.

Question: Would it be inappropriate to put this list somewhere on the Less Wrong Wiki?