Xfake_acid_7,
Xfake_acid_8,
+ Xfake_acid_1_player, /* newly added to EM engine */
+ Xfake_acid_2_player,
+ Xfake_acid_3_player,
+ Xfake_acid_4_player,
+ Xfake_acid_5_player,
+ Xfake_acid_6_player,
+ Xfake_acid_7_player,
+ Xfake_acid_8_player,
+
Xgrass,
Ygrass_nB,
Ygrass_eB,