the invention is a tile or card matching game , wherein the object is for the players to find , from memory , pairs of cards with matching indicia . referring now to fig1 , the front ( face ) of a typical playing tile 10 is shown generally , with an indicium 12 . optionally , the face of the tile 10 also contains a characteristic icon 14 associated with the indicum 12 . this is used to add an additional strategy element to the game , which will be explained in more detail below . in the example shown in fig1 , the indicium 12 is a character named undula ™ from the cogno ® series of books and games from doublestar , llc of st . louis , mo . in the background , behind undula ™ is the characteristic icon , which in this example is a drawing of a blue planet , which has been designated “ cold planet ”— meaning undula ™ can only live on a cold planet . referring now to fig2 , the back of the tile 10 is designated as a coding area 16 . players are permitted to place a mnemonic code . the drawings show text and a symbol as codes , but , as will become apparent , any code can be used . the object of the code is to aid the player who placed the code to remember which indicium is on the front side thereof , while at the same time , not being too easily deciphered by competing players . in the example shown in fig2 , two codes 20 , 22 are shown . although , the drawings are in black - and - white , it should be understood that in the preferred embodiment each player is assigned a different color for his or her codes . thus , each player can know who wrote which codes . if the drawings were in color , it would be seen that code 20 is red , and code 22 is purple . hypothetical player 1 drew code 20 . the words “ loch ness ” are intended to remind the player that undula ™ is the indicium on the other side . those familiar with the cogno ® characters will understand that undula ™ is indigenous to water . hypothetical player 2 drew code 22 , which is a pictograph of an airplane . because undula ™ is the fastest creature in the universe , the jet plane ( being a fast mode of transportation ) is intended to remind player 2 of undula ™. in its most general form , the preferred embodiment is played as follows . a plurality of tiles 10 are arranged in a playing area , face down . the complete set of tiles comprises pairs of tiles with matching indicia 12 on the front thereof . only the coding region 16 of the tiles is exposed . game play is turn - based , with a player on his or her turn exposing one tile 10 . he or she then tries to find a tile 10 with a matching indicium 12 to the first . if the indicia 12 match , the player keeps the matching pair ( and in the preferred embodiment , is entitled to another turn ). if the indicia 12 do not match , the tiles 10 are returned to the playing area face down in the same location . the player then has the opportunity if he or she wishes to place a mnemonic code in the coding region 16 . in the preferred embodiment , the coding region 16 is a dry erase surface , and , as mentioned above , each player is given a dry erase marker of a unique color , so that each player knows which codes belong to which players . other coding devices are also possible . for instance , flexible members ( e . g . pipe cleaners ) of varying colors may be used by players to bend into coded shapes . in some variations , it is possible to give another player an opportunity to code one or both tiles 10 . in fact , in the preferred embodiment , the player to the right of the player whose turn it is , is permitted to code the first ( exposed ) tile 10 , while the player whose turn it is , is coding the second ( unexposed ) tile 10 . play then passes to the next player , who attempts to locate a matching pair in the same manner , by using his or her memory , his or her own codes , and / or any codes of opponents that he or she has deciphered ( or thinks that he or she has deciphered ). after all of the tiles have been matched , the player with the most sets of tiles 10 is declared the winner . players are not bound to keep a consistent coding schema . each player is entitled to change his or her coding schema as often as he or she wishes during a game , and may even place intentionally inconsistent codes to deceive his or her opponents . other variations of the preferred embodiment are possible to make game playing more interesting and to add additional strategic elements . in one such variation , characteristic icons 14 are included with each indicium . an indicator 18 , as shown in fig3 , is used to keep track of which characteristics are eligible for removal from game play . if a matching pair of tiles 10 is found , the player may only keep the pair if the characteristic associated with the indicia 12 is designated that turn . if the characteristic is not designated that turn , the tiles 10 must be replaced to the playing area the same as if the indicia 12 did not match . each time a pair of tiles 10 is removed , the indicator is changed to designate a new set of characteristics . as shown in fig3 , the indicator may simply be made of a card with icons representing the characteristics being indicated on that turn . to change the indicator , the card is simply flipped over . fig3 shows both sides of the indicator 18 . on side 1 , is a drawing of a blue planet , like the “ cold planet ” seen on the tile 10 of fig1 . on side 2 , is a drawing of an orange planet , representing a “ hot planet ”. thus , in the examples shown in the figures , if the indicator 18 was positioned with side 1 up , a player finding the two matching undula ™ tiles 10 could remove them from play . however , if side 2 of the indicator 18 was facing up , a player finding the two matching undula ™ tiles 10 would have to return them to the playing area because the characteristic associated with undula ™ ( cold planet ) does not match the characteristic on the indicator 18 ( hot planet ). in an alternative embodiment , the indicator 18 can change every turn . in another alternative embodiment , each player is given a pass ( or more than one ) at the beginning of the game which can be redeemed to change the indicator 18 out of sequence . when using the characteristics indicator 18 , certain indicia 12 are designated as wildcards — that is they have no associated characteristics . thus , these wildcard tiles 10 may be removed when matched regardless of the status of the indicator 18 . indicia may be shown as wild cards by displaying no characteristics icon 14 therewith . in yet another embodiment , the tiles 10 are not removed when matched . instead , the indicia 12 are arbitrarily ordered , and potentially numbers representing that order are located on the tiles 10 adjacent to the indicia 12 . the object in this alternative embodiment is to find three tiles 10 with consecutively ordered indicia 12 . in a subvariation thereof , a player who has found three consecutively ordered indicia 12 , may at his or her option select a fourth tile 10 seeking an indicium 12 that would extend the consecutive run ( either upward or downward ). if , however , he or she did not find a tile 10 that extended the run , all of the tiles 10 selected on the turn would have to be replaced . if the run were extended , he or she may optionally risk all of the tiles 10 again by selecting an additional tile 10 in a further attempt to extend the run , and so forth . in this subvariation , the winner is the player collecting the most tiles . the game may also be computerized . in a possible computer version , each player is located at a separate computer or terminal , connected by local area network ( lan ) or the internet . each tile is an abstract computerized object , which can be exposed to only one player by displaying the indicium associated with the tile on the screen of that player . the coding regions in this version would not be on the physical backs of tiles , but would be logically associated with tiles in a one - to - one correspondence . while the foregoing is directed to the preferred embodiments of the present invention , other and future embodiments of the invention may be devised without departing from the basic scope thereof , and the scope thereof is determined by the claims which follow .
a memory game is shown similar to the game of concentration . however , each tile has a coding region associated therewith for players to aid their memories with mnemonic codes . additional variations are disclosed , including limiting which indicia may be matched and removed on a given turn and the use of a rummy - style removal of tiles using logically ordered indicia .