After a certain time, the bombs surrounding the ring will explode which can lead to one or several competitors knocked out or they would just stand like nothing happened because it’s Japan and no one sells a lot of moves there.
Barbed wire deathmatches have the ring ropes replaced by electrified barbed wire. What’s that? You want something different? Well, you got it! Freakin’ deathmatches fresh from Japan, brother dude jack! You get two kinds - barbed wire and landmine.