Run over a grid without being caught by enemy spiders. Similar to
early 80s coin-op.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]               101606  106020  95.8% -lh5- 251f Dec 15 11:53 CRB-GridderGame.exe
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         1 file   101606  106020  95.8%            Dec 26 17:37