This game continues from the alternate timeline here where I made two mistakes in the game engine.

Bots were passed their own previous move and told it was their opponent's previous move.
Bots were always given 0 as the round index instead of the correct positive integer.

CloneBots

Multiple people have noted that CliqueZviBot is outperforming the other CloneBots. This is due to how the CloneBot code interacts with the bugs in the my engine.

The CloneBots still cooperate, but they do so imperfectly. All CloneBot pairings result in 200-300 splits instead of 250-250 splits. The CloneBots use source code parity combined with round number parity to determine who wins the 200-300 split. Therefore if CloneBotA and CloneBotB get a 200-300 split in favor of CloneBotB then they will always get a 200-300 split in favor of CloneBotB.

Rounds 11-30

Round 11

Looking at the obituary I suspect that CooperateBot may not last much longer.
― Prediction by Larks after seeing the results from Rounds 1 to 10

Larks' CooperateBot died on round 11.

Round 12

PasswordBot from Team Multics died along with "Why can't we all just get along" from Chaos Army and an NPC.

Round 13

No casualties.

Round 14

6 bots died.

BeauBot, OscillatingTwoThreeBot, RandomOrGreedyBot and SimplePatternFinderBot from Chaos Army
"Definitely Not Collusion Bot" from Team Multics. Multicore's fodder has been consumed. Team Multics contains only the MimicBot from here on.
1 NPC

Round 15

5 bots died.

Silly Invert Bot 2, AttemptAtFair, Insum's CooperateBot, MeasureBot and "Random-start-turn-taking" from Chaos Army
1 NPC

MeasureBot had succeeded in infecting AbstractSpyTreeBot's move method and replacing it with return 0. AbstractSpyTreeBot ought perform better with MeasureBot out of the game.

Round 16

3 bots from Chaos Army died

"Silly Counter Invert Bot"
LiamGoddard
"Pure TFT"

Rounds 17-22

4 NPCs died

Round 23

BendBot and Copoperater [sic] died. BendBot belonged to Zvi. CliqueZviBot does not actually belong to Zvi. It is named after Zvi's strategy from the original name.

Round 24

No casualties.

Round 25

Copybot Deluxe died.

Round 26

RaterBot died. RaterBot performed semantic analysis on its opponents' source code. This may have contributed to breaking the symmetry of the clones.

Round 27

No casualties.

Round 28

Empiricist died. Empiricist was the most complicated bot I agreed to write the code for. The bot is exemplar of a precise, well-written spec of a clev...

2020 Less Wrong Darwin Game