some old - school arcade games like break the bricks, le brickk mania. hex defense is a nice tower defense game. glow hockey, word games like wordfeud for multiplayer, le god of words for single player.
Here are some more really good must have games that run on slow android devices...
I have had to do a lot of hit and misses to get the following games so I am including more info so that those of you who have slow devices don't have to spend as much time as I did. Arcade Style Games Ninja Rush Deluxe - (an updated version of the game) (Addictive fun Ninja Game, tap the star to throw stars, slide your finger from your ninja to right to speed up, or slide left to slow down, tap to jump.) https://play.google.com/store/apps/...iY29tLmZlZWxpbmd0b3VjaC5OaW5qYVJ1bkRlbHV4ZSJd
BreakTheBricks (runs slow but still playable - Like Arkanoid but with better graphics, set the game of fast if it runs to slow, also, you can slide your finger or tap the spot on the screen to move your blocker, on slow devices I recommend simply tapping on the spot you want your blocker to go to)https://play.google.com/store/apps/...yLDEsImNvbS5jYW5keWRyb2lkLmJyZWFrYmxvY2siXQ..
Air Control Lite - An awesome game where random colored planes and green helicopters come on the screen. You have to drag your finger from the planes and helicopters to create a flight path indicated by a line, but be careful as to not to have the planes or helicopters colide, helicopters must land on the helipad, planes must land on the runway lit up as the same color (only lights up the color when you are dragging your finger to create a path, different speed planes). Very addictive. https://play.google.com/store/apps/...sMSwyLDEsImRrLmxvZ2lzb2Z0LmFpcmNvbnRyb2wiXQ..
Shoot Bubble Deluxe - Very Addictive, nice graphic game where you have to aim the ball and try to hit balls with the same color to get rid of them off the board. To get rid of balls with the same color,there has to be more than one on the board. https://play.google.com/store/apps/details?id=com.shootbubble.bubbledexlue&hl=en
Traffic Rush - A very addictive game where you have to prevent accidents in the intersection. You can stop car/truck/motorcycle for a little while by tapping on it, you can speed car/truck/motorcycle up by sliding the from the car/truck/motorcycle in the direction it is moving but you then can't stop it. https://play.google.com/store/apps/...sImNvbS5ldXRvcGlhLmdhbWUudHJhZmZpY3J1c2giXQ..