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And me...... I know a better game with such a similar rule:
We have a Chess game, but when a piece(not-Pawn) takes another then it takes it's power also.....For example if a Knight takes a Bishop then it becomes an Archbishop (Janus or Knight+Bishop or whatever....). If it takes a Queen then becomes a Maharajah. If a Knight captures a Knight then nothing happens......
It's quite interesting! It is called evolution Chess...........
(kaŝi) Se vi alklakas la nomon de ludanto, kaj poste 'Finitaj ludoj', vi ricevos liston de finluditaj ludoj, poste alklaku nomon de ludspeco por ricevis superrigardon super ĉiuj tiuspecaj ludoj, poste alklaku denove la nomon de ludo, kaj vi ricevos tiun renkonton por rigardi kaj analizi. (Servant) (Montri ĉiujn konsilojn)