"UNO Stacko" is a combination of both the original card game "UNO" and the block tower game "Jenga." Between two and 10 players take turns pulling single, different-coloured blocks from a tower and placing them on top of it in accordance with game rules. Play ends when someone makes the tower fall. "UNO Stacko" was published by toy company Mattel in 1999. A game of "UNO Stacko" takes approximately 20 minutes to play from start to finish and is recommended for ages 7 and up.
Select a player to go first; that player must build the tower.
Use the loading tray (included with the game) to stack layers of three blocks at right angles to the layer below it. For example, if you lay three blocks horizontally (with the ends facing west and east), lay the next three blocks on top of them vertically (with the ends facing north and south). Use all of the blocks to construct the tower.
Straighten the tower using the loading tray and place it on a flat, stable surface, such as a table. All players then sit around the tower in a circle.
Take turns, going clockwise, starting with the player who built the tower. Player one selects a block and pulls or pushes it from the tower, being careful not to knock the tower over. A block can only be taken from below the highest completed (three block) level.
Place that block on top of the tower in the same fashion the tower was built. The top level must have three blocks in it before a new level can be built.
Observe the block that was just placed.
If a block with a number was selected, the next player must select a block of either the same number or colour.
If a "Draw Two" block was selected, the next player must select two blocks of the same colour as the "Draw Two" block. This player may not select a "Reverse," "Skip," "Draw Two" or "Wild" block. The player after that must select a block that matches the colour of the previous player's second selected block.
If a "Reverse" block was selected, play continues in the opposite direction (counter-clockwise) until another "Reverse" block is selected. The next player must select a block that matches the colour of the selected "Reverse" block.
If a "Skip" block was selected, the next player misses a turn and play resumes with the player after the skipped player. This player must select a block that matches the colour of the selected "Skip" block.
If a "Wild" block was selected, the player who selected it may choose a colour and announce it to the other players. The next player must select a block of the same colour announced by the previous player. A "Wild" block may be selected in place of any block, except after a "Draw Two" block.
Play continues in this fashion until a player knocks the tower over. That player is the loser.
As an additional rule, players are only allowed to use one hand to pull or push a block from the tower. If a player catches another player using two hands, she may announce "UNO!" and the offending player must draw two blocks.