What to Say, what to say.
Concursion is the first game I'd call a 'multi Gerne' game. The game itself consists of 5 'sub Games', such as an old-school Mario-Style world, a Ninja gaiden style world, something close to the Helicopter flash game,... a world where you can only move through the thrusts of a Jetpack, an R-Type Side Scroller world and a Pac Man world.
Now, this might sound like there is 5 worlds that all use that one mechanic
well, you are wrong. You see, the world you are in is pretty instable and so the 5 different worlds overlap at points, so in the stages you will change mechanics in the levels.
Now, why would you change the worlds mid-level? The reason is simple. every hero from each world has a special ability. Mario-Man can sprint, Ninja-Man can double jump and slash enemies with his sword, Pac Man-Man can eat pellets and open doors with them, Jetpack-man can use a jetpack and R-Type-Man shoots Laser bullets with his Ship. So along with the various enemies that also change their behavior on changing worlds, you'll be using the different mechanics to solve the levels.
Now what about the game itself?
The music is nice and upbeat, befitting for a platformer. the gameplay is tight and challenging, especially during boss fights and in the later part of the game (last two stages to be exact) the controls are simple. 4 arrows for movement, a Jump and a Fire Button (also preset to fit both qwerty and qwerty layouts. Big plus here!) but still work pretty well.
now the negative,
It gets a little too challenging at times. For one gem shard I had to get developer help, the controls sometimes seem to lock each other (although a bug report has been filed already) and the Steam works overlay kills the controls
overall, I really loved the game, its story (although you could see the twist coming from a mile away, but the delivery was still great!) and I recommend it to everyone who loves old-school platformers!
(Reviews might be translated for user convenience)