1) Bring down 2) Come down 3) Descend 4) Fall 5) Fall forward 6) Force from office 7) Go down 8) IOS game 9) Knock from the top spot 10) Knock over 11) Overthrow 12) Overturn 13) Push over 14) Tip over 15) Tumble 1) Collapse 2) Conquer 3) Depose 4) Fall 5) Overthrow 6) Unseat 7) Upend 8) Upset 
Topple is also a game developed and published by ngmoco for the iOS platform. It is available for download on the iPhone and iPod touch on the App Store or iTunes. ==Gameplay== In Topple players have to complete levels by stacking different shaped blocks vertically to reach a set height. Blocks are stacked by being dragged using the players finger...
• (v. i.) To fall forward; to pitch or tumble down. • (v. t.) To throw down; to overturn.
Top'ple intransitive verb [ imperfect & past participle Toppled ; present participle & verbal noun Toppling .] [ From Top summit.] To fall forward; to pitch or tumble down. « Though castles topple on their warders' he...Top'ple transitive verb To throw down; to overturn. « He topple crags from the precipice.» Longfellow. 
be unsteady and overturn 
[v] - cause to topple or tumble by pushing