I recently ‘updated’ my home rules KOOKS system by changing the d20 system to a 2d10 system; along with other small changes. Tonight we did a one shot where the players were given very powerful 5th level Characters with very high level armor. They were to fight against a lot of lower level NPCs and a few higher level NPCs, but none that could be considered equals or superior.

The game was a route. The two high level Player Characters just waded through the masses of low level opposition and demolished them.

Why?

Because the 2d10 system creates a Bell Curve. It is very unlikely that anyone will roll a very high roll or a very low roll within their range of possibilities. With PCs that each had Defense Modifiers of 18+ it was just about impossible for a lower level NPC to hit them.

The first time I experimented with this idea was in a wargame I made called ‘C’est la Guerre‘ where instead of using a 1d6 I used 2d6 creating a bell curve of options. Two infantry units blasting away at each other with musketry were very unlikely to do anything more than cause low level incremental damage. Throw in some artillery and that damage gets higher but not overwhelming. It is at that point that you send in your cavalry to charge or some fresh infantry to do a bayonet attack. That was the only way of breaking those stubborn infantry units.

The two dice versus one changed the dynamic of the game tonight. The two powerful PCs dominated a group of 8 lower level guards and a higher level captain. Then when they confronted three enemies who were close to parity, but not equal, they had a bit of a fight on their hands. But again it was very difficult even for the bosses to hit the two PCs.

If I had wanted to create a real challenge, then I would have needed to add something much more powerful to the mix. Perhaps a ‘boss’ possessed by a high level demonic force? Or perhaps a magic user with access to very high level spells? Or an NPC with a very high level protector?

Something to think about.