Ultima II: The Revenge of the Enchantress/Pangea age


 * In 1423 BC, in Castle British, the subdued balron whimpers: Lithium packs the 16th level!

Tri-lithium is necessary for space travel.

In the original version of Ultima 2, dungeons and towers are completely optional, because tri-lithium can also be dropped by defeated thieves. In the Japan-only FM-Towns port, enemies do not drop tri-lithium anymore, therefore there is a reason for exploring dungeons and towers.

Because of the 99-rollover bug, collecting 100 tri-lithiums is the same as collecting zero.

Anytime: dungeon in Greenland
In the DOS version of Ultima 2, this dungeon cannot be accessed in Pangea.

Side quest: Sentri's Quickblade

 * In 1990 AD, in New San Antonio, Santre the Swashbuckler warns: Beware, I've a quick blade!

The above line is the only clue about it, but you can offer 500 gold coins to Sentri/Santre and purchase the Quickblade.

It is the strongest weapon in the game, but its price is very very high regardless of charisma and intelligence. Actually, it is not required to clear the game.