A test level for you to try. copy the text below and paste it into the editor save screen over the text that is there already:
eNrt1sEKgCAMBuAX2kH3K9H7v1i4sol40XaoGD8D8/A5K8FAwTQxvL8yJbNUMxHLM0udqXP97IyJxlVHx2WESbPtqjq41+KlvY/MJCJ3fc+8Tx6Ybc9YMK2/kQZXnv9LbtqeTTfddNPNv5rxGxcvRrkhbtjzATJw87c=
 "Arena 3000"){kind=icon}
 "Vector Wars"){kind=icon}
 "Jax and the atomic CAVES OF DOOM"){kind=icon}