Tiger Electronics is an American toy manufacturer probably best known for its handheld LCD games.
In 1995 Tiger acquired the toy division of Texas Instruments and agreed to produce electronic toys for Hasbro and SEGA which included LCD games for their biggest franchises and also an extensive range of Sonic The Hedgehog games though a good number of other games actually exist such as Street Fighter II and Mega Man.
Configuration in terms of buttons and layout vary for the game requirements.
Some are pictured below.
These were rather popular in the UK through retailers such as Argos, Toys 'R Us and catalogue companies as the actual games were relatively expensive. Some have since become collectable and can be found on Ebay for some considerable sums rising with their relative rarity.
A large bank of images can be found at http://zappa.brainiac.com/cdyer/handhelds/tiger.html
There is an ongoing effort to emulate many of these games (not just from Tiger) with a good selection being playable through your browser at http://www.pica-pic.com/.
Another venture of Tiger was the Tiger Game.com device which saw a release of Sonic Jam - a compilation of Sonic The hedgehog games and Fighters Megamix both originally released on the Saturn. It was also home to conversions of Resident Evil 2 and Duke Nukem.
Although it sported some innovative features such a touch screen and limited internet connectivity it could not compete against the market share the Gameboy had and ultimately it failed with some 20 games made in total.
Between 2004 and 2005 Tiger Electronics LCD games were released with McDonald's Happy Meals. These included characters from the Sonic Adventure series.