Just so you know, this is one SERIOUS undertaking as it would be necessary to change all the dësc's, spöb's and s˙st's multiple times over. If you do want to do this, you can start by making two copies of the s˙st resources for the correct systems. Then make one of the copies keep the original resource id and change the visibility field to test for bit 9995 (!b9995) which if it's not set, means the game is still going on. Then for the other set, change the resource ids to unused numbers and set the visibility fields to something like b9995 & b334. This would test for the bit activated at the end of the polaris string and one at the end of the game. You can then change the parameters for the changeover systems to reflect the changes, and repeat the last few steps for each ending. I hope you've been able to understand this.
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"Eagles may soar, but weasels don't get sucked into jet engines."