The game offers several "packs" of images, 11 images in each pack, and they don't just share a common theme, there is a logical, hierarchical connection between them, an evolution from the first to the last image in the pack.

To play the game, move the tiles (images) by swiping the game board.
When two tiles with the same image touch, they merge into a single tile with the next image.
You win a game when you reach the last (11th) image in the pack.
If the board fills up and you can not make any new images any more, you lose.

All images and audio used in the game are either in the public domain, used under various licenses, or created/owned by me.
A complete rundown of the licenses is available in-game.

Image Packs
Dollar Fund - Collect US Dollar coins and bills.
Euro Fund - Collect Euro coins and bills.
Air Warfare - Witness the evolution of man's flying war machines.
Man in Space - Witness man's conquering of space.
Grand Prix - See how Formula 1 cars evolved from the 50's to the 2015's.
Apollo 11 - Remember the historic mission that landed the first man on the Moon.
Apollo Missions - Collect the insignias of all Apollo manned missions.
Card Deck - A tribute to the original game, only instead of numbers you have playing cards.

Blueprint Packs
Geometry - Start with a Point and build up from there.
Electronics - Build an electronic circuit board out of various components. 

Current Version:
2.6.1

Requires Android:
5.1 and up

Compatibility notes:
a) Requires a display with an HVGA resolution or larger
b) Devices with low density displays are not supported

This app is no longer available.