Once you have inserted the disc of Infogrames's Behaviour Interactive-developed 1999 three-dimensional platform game Bugs Bunny: Lost in Time into your Sony PlayStation (in the case of the Microsoft Windows version you need administrative privileges to install and play it on your computer, because if you don't, neither the installer nor the game itself will load), it will (after the standard Sony Computer Entertainment logo in the case of the PlayStation version) display the Infogrames, Warner Bros. Interactive Entertainment and Behaviour Interactive logos; you will then be presented with six languages English, Français (French), Español (Spanish), Deutsch (German), Italiano (Italian), and Nederlands (Dutch). Use the D-Pad or Left Stick (or arrow keys) to select a language, then press 
(or ) to confirm your choice (however, this guide's only going to detail the English text and dialogue).
The game will then proceed to the title screen seen above, as Bugs is tunnelling towards a rabbit hole and jumps out of it; the text "PRESS START" (or "PRESS ENTER", in the Windows version) shall then flash up above him. Once you have done so, the text "BUGS BUNNY LOST IN TIME REQUIRES ONE FREE BLOCK TO SAVE." will appear above him (in the PlayStation version) - and once you have pressed to continue in this version the text "ACCESSING MEMORY CARD" will appear. If the memory card in Slot 1 of your PlayStation does not have a save file, the text "THE MEMORY CARD IN MEMORY CARD SLOT 1 DOES NOT HAVE A SAVE FILE. CREATE SAVE FILE NOW?" will appear; use either D-Pad or Left Stick to select either "CREATE FILE" or "CANCEL", then press to confirm your choice. If you pick "CREATE FILE", the text "CREATING SAVE FILE" will appear (but if the memory card is full the text "THE MEMORY CARD IN MEMORY CARD SLOT 1 IS FULL." and the reiteration of the game requiring one free block for saving will appear) - and if you choose to continue the text "MEMORY CARD UNAVAILABLE" will appear, and you must again use either D-Pad or Left Stick, to select "START NEW GAME" or "RETRY", then press to confirm your choice. If you pick "START NEW GAME", the text "WARNING! YOU WILL NOT BE ABLE TO SAVE YOUR PROGRESS UNLESS YOU CREATE A SAVE FILE NOW." shall appear; if you still choose to start a new game, you must once again use the D-Pad or Left Stick to select either "START", "CONTROLLER CONFIGURATION" or "GO BACK", then push confirm your choice. However, if the memory card is not full, it can hold up to six different saved games that you (or the other members of your family) have started (the Windows version will immediately proceed to this point), and you can either start a new game or load a previously saved one (in the Windows version, you can also quit here and return to the desktop, but the "CONTROLLER CONFIGURATION" option before starting is not present).
The game will then proceed to the opening cutscene, which shows Bugs tunnelling underground towards a potting shed and coming out inside it (as the original voice of the Looney Tunes, Mel Blanc, died in 1989, Bugs is voiced in this game by Billy West, who had previously voiced Stimpy, and also Ren after initial creator John Kricfalusi left, in Nickelodeon's The Ren and Stimpy Show, as well as several characters in Twentieth Century Fox's Futurama):
Bugs will then find himself on the time machine in the Era Selector, from which he can only travel to Nowhere; once you have pressed (or in the Windows version) to make him travel there, the "training" level's cutscene will start. However, if you point Bugs to an era that he cannot enter (for not having enough Clocks), hold 
and 
, then press 
, 
, 
, 
, 
, , and thrice more (in the PlayStation version), it will open all five eras (and twenty-one levels) - however, as with the code which grants Bugs all four magical abilities, there is no equivalent code in the Windows version.