Here is a list of some of the more common cheat/console commands that can be used in a private game that has cheats enabled. All commands are entered as if you wanted to send a message to other players (ENTER by default).

Hero

-lvlup [value]

Usage: -lvlup 10

• Increases level by [value].
• Capped at 25.
• Does not accept negative values.

-gold [value]

Usage: -gold 1000

• Increases your gold by [value].
• Positive and negative values are allowed.
• Max gold is 16383.

-item [item]

Usage: -item item_ultimate_scepter Gives your hero [item].

• Item IDs can be found on item pages under Extra Information.

-respawn

• Respawns your hero at the fountain.

-refresh

• Resets all cooldowns and HP/Mana.

Game

-startgame

• Skips count down timer and spawns the first creep wave.

-wtf

• Removes all cooldowns and mana costs from all units.

-unwtf

• Undo the -wtf command.

-dumpbots

• Briefly displays the current state of all heroes and bots.

-ping

• Briefly displays your current ping and packet loss in the top right corner of your screen.

-createhero [unitname] [enemy]

• Creates [unitname] at your mouse cursor position. Heroes will be taken control by an idle bot. Hero IDs can be found on hero pages under Extra Information.

Bots

-levelbots [value]

• Levels all bots by [value].

-givebots [item]

• Gives [item] to all bots.
• Item IDs can be found on item pages under Extra Information.

Creeps

-spawnneutrals

• Spawns all neutral creeps. Does not respawn Roshan.

-spawncreeps

• Spawns a wave of creeps. The server will disconnect you if there are to many creeps out at once.

-disablecreepspawn

• Disables the spawning of creep waves.

-enablecreepspawn

• Enables the spawning of creep waves.

Vision

-allvision

• Grants vision of all Radiant and Dire units.

-normalvision

• Grants normal vision of only your teams units.

-clearwards

• Removes all Observer Wards from the map.

-killwards

• Removes all wards from the map.