So basically the main villain of the game wakes up and wrecks the top of a pyramid.
Fire Emblem IF - Anankos Awakens (Cutscene)
In terms of size it looks similar in design to Tikal Temple I so I'll use that as a basis.
The temple itself is 545 pixels.
Since Its 47 meters tall this gives us a ratio of 0.086 meters per pixel.
The portion that was destroyed is 89 pixels tall
89(.086)
=7.654 m
Length of the base of the structure that was destroyed is 177 pixels and the top is 104 pixels respectively.
177(.086)
=15.222 m
104(.086)
=8.944 m
Now to find the volume.
Volume of a trapezoidal prism is 1/2h(a+b)l
1/2(7.654)(8.944+15.222)15.222
1/2(7.654)(24.164)(15.222)
3.827(24.164)(15.222)
92.475(15.222)
=1407.654 m
assuming 80% hollowness
1407.654(0.2)
=281.530 cubic meters
converting to centimeters
28,153,000 cubic cm
fragmentation of rock 8 j/cc
28,153,000(8)
=225224000 joules
converting to tons of tnt
.05 tons of tnt
huh.I was expecting something a little higher than small building level of all things