Crumble/Speed blocks First off, change the graphics in SMILE. 06A should work fine. Crumble block if stepped on(primary), can break as speed block as well. Crumble will be primary, speed block secondary. Let's see... Type: PLM block(crumble in SMILE). BTS: 08 (Type B, BTS 08) 94:9149 E0EF (PLM Header) 84:EFE0 E4EFF9C9 ;Amazingly, the default instructions work PERFECTLY for what I want. What are the odds of THAT? 84:EFE4 LDA $0B02 AND #$000F CMP #$0003 BNE BRANCH_BETA LDX $1C87, Y LDA $7F0002, X AND #$F000 ORA #$006A STA $1E17, Y AND #$8FFF STA $7F0002, X TYX LDA #$0004 STA $7EDE1C, X SEC RTS BRANCH_BETA: LDA $0B3E AND #$0F00 CMP #$0400 BEQ BRANCH_ALPHA LDA $0A1C CMP #$00C9 BMI Fail CMP #$00CF BMI BRANCH_ALPHA Fail: LDA #$0000 STA $1C37, Y SEC RTS BRANCH_ALPHA: LDA #$0000 LDX $1C87, Y STA $7F0002, X LDA #$C9E4 STA $1D27, Y CLC RTS AD020B290F00C90300D021BE871CBF02007F2900F0096A0099171E29FF8F9F02007FBBA904009F1CDE7E3860AD3E0B29000FC90004F015AD1C0AC9C9003005C9CF003008A9000099371C3860A90000BE871C9F02007FA9E4C999271D1860 X-Ray for blocks 91:D3AA 6A Yeah. It's that simple. XD Bomb reaction for blocks 94:9DB4 50F0 ;PLM Header. 1x1 crumble is CFFC --> CFA0 C8EC 84:F050 A0CF54F0 84:F054 01005AF0BC86 84:F05A 01006AB00000 Summation 84:F050 A0CF54F001005AF0BC8601006AB00000