WARNING:
There is currently a bug which hasn't been fixed within certain versions of 1.9. I have reported it and hopefully I will be fixed soon. The bug causes the glowing effect to flash time to time, but most of the time it works. https://bugs.mojang.com/browse/MC-91119

AFFECTED VERISONS: 1.9 + 1.9 snapshots
MINIMUM VERSION FOR THIS MAP CURRENTLY: 1.9 

Recording for YouTube:
If you record on this map please could you insert the forum link of this map within your description, thanks :) 

http://www.minecraftforum.net/forums/mapping-and-modding/maps/2561702-1-9-mini-game-hidden-spleef-invisible-spleef-mini

Camezonda