Original game by Data East in 1980.

Exact port of the original to JavaScript using the method of static binary translation in March 2015 by Norbert Kehrer.

Read more about it on my homepage at https://norbertkehrer.github.io

Keys to play:

Left	Crsr Left, Z, or Y
Right	Right or X
Fire	Ctrl or M
Start 1 Player	1
Start 2 Players	2
Insert Coin	5, or 6, or 7
Pause Game	P