"Tiger Heli (タイガーヘリ) was one of the first games developed by Toaplan (a now defunct Japanese arcade game developer) and published by Taito Corporation in 1985. It is a predecessor to Twin Cobra. The player controls a helicopter named Tiger Heli taking out various enemies along the way.
The game is a vertical scrolling shooter where the player controls a helicopter taking on hordes of enemies which include tanks, battleships, and artillery. It is interesting to note that, besides some airplanes taking off, there are no flying enemies in the entire game. The player's main weapon is an unlimited supply of missiles which travel a max distance of half the screen's height. The player also has two bombs which destroy all objects within a large circular radius. These bombs can be blown off by enemy bullets. The player is killed after only one hit, and is re-spawned to a point approximately one whole vertical screen-length later, thus progressing the player past the obstacle that had killed him, albeit at a high cost. The player is given three lives initially and bonus lives are awarded at 20000 points and every 80000 points thereafter. Flashing crosses scattered throughout each level award players power-ups depending on which color the cross is. A red cross will gives the player one side-firing mini-heli which shoots perpendicular to the player's helicopter. A white cross yields a forward firing mini-heli. It is possible to have a mix and match of side-helis, totaling no more than two. The green cross will award the player with an additional bomb, if the player currently has less than two. Grabbing power-ups when not necessary yields 5000 points.
There are a total of four stages, all of which start and end with a helipad. After completion of the last stage, the game will restart in a more difficult mode starting on stage 2. Most of the game's areas contain unnecessary objects to destroy for bonus points, such as oil drums and houses. This was uncharacteristic for shoot 'em ups at the time."
Source: Wikipedia, Tiger Heli , available under the CC-BY-SA License.