Welltris, or 'Tetris: the Sequel', if you prefer, is the long awaited follow up to the arcade classic Tetris, one of the most successful logic games ever.
The action takes place in the 3D well on the left of the screen. The aim of the game is to guide the various shapes down the walls of the well, rotating them if necessary, so that they fit perfectly with the pieces already on the floor. You have to do this without leaving gaps, or pieces resting against the walls of the well.
Allow a piece to come to rest on the wall of the well, and the entire wall section is blocked for the next three falling pieces. When all four walls are blocked it's time for the immortal words 'Game Over'.
Sounds simple? If you can think and react fast enough it is, if you can't, however, it can be a very different story.
After sliding down the wall of the well, pieces continue to slide across the floor until they're either stopped by coming into contact with another piece or the opposite wall of the well. As a piece falls it can be moved around the walls of the well, providing they're not blocked, and when it reaches the desired point of entry to the well floor, pressing the space bar sends the piece flying down to a perfect fit with its companions.
The higher the piece on the wall when released, the more points scored. When a line is completed across the well floor either horizontally or vertically, it disappears, allowing room for more pieces to fall.
The screen displays despite various aspects of Soviet society and as the difficulty levels change, so does the scenery. Anyone able to make it past Alexey should contact MENSA, and start donating to a sperm bank immediately (er, unless you're a girly - Ed).
Like many essentially simple concepts, the closer you look the more complex things become. Any game which possesses these qualities is invariably a good one. No doubt Alexey Pajinov will do for home computing what Professor Rubik did for coffee tables.