 Water and Vs mode don&#39;t mix. The 16x8 mappings for Vs mode are hard coded, and each Vs zone has it&#39;s own rasterization and deformation data, which is different from the regular rasterization and deformation data for the zone.<br><br>MCZ only has one collision index. For loops all you have to do is create a duplicate of the normal index and alter the collision values for the tiles you want to use in the loops. The collision index pointer table has two entries for each zone, one for the primary index and the other for the secondary index (only zones with loops and crossover sections use the secondary index). 