Or, Are Healing Potions Too D&D?
Being a comparison of the original 1974 boxed set edition of Dungeons & Dragons (D&D) and Tunnels & Trolls 5th Edition (T&T).
In the D&D rules we have a Vancian-based magic system. For those of you unfamiliar with Jack Vance's writings? Let us simply say this is a fire and forget system. The magic-user (MU) studies his spells, imprinting and storing the magick in his mind. This potential is then unleashed when the MU speaks the final part of the spell with accompanying hand gestures. Releasing the spell energy removes that spell from the MU's mind. More powerful spells take longer to both memorize and cast, and take up more room in the MU's mind. With experience, the magic-user can hold great numbers of spells in memory, making him a dangerous foe. This is balanced by the fact he cannot cast a spell he does not have memorized, as well as his relative weakness in combat (though a first level fighter in melee with a 9th level magic-user would still be candy).
T&T magic is based upon some kind of psi-factor [...] all powered by an inner strength. Any spells the wizard knows can be cast at will, provided the wizard has enough Strength (changed to WIZ in later editions) to do so. STR can be exceeded but run the risk of draining the wizard and killing him. Wizards in this system are also poorer in combat, but do have the advantage of being able to wear armor and carry a shield if they so desire.
Though it is a rather useless comparison, magic spells in D&D go as high as 6th level and eventually up to 9th in later editions. T&T's magic goes to level 20. Because the two systems are so different, however, this comparison is of little value. We mention it here because the question has arisen an number of times in discussions of the two rules sets.
Both systems allow spell-casters to research and write new spells. MUs must have a spellbook to relearn any cast spells, or to change their memorized spells to a different one. Wizards either know a spell or do not, though they can learn new spells by studying another wizard's spell books.
Wizards carry staves as an aid to spell-casting (termed a focus in later editions) in the T&T universe, the better the staff the better the magic effects of the cast spells. A wand may be used for the same purpose. D&D MUs use staves for combat. Magical D&D staves are like giant wands, holding specific spell casting abilities and a finite number of charges.
The oddest difference we have found? T&T has no potions! Obviously these would be a simple matter to add to the rules. In point of fact, out of curiosity we checked the most recent edition of the game: Deluxe Tunnels & Trolls. We found potions and rules for them included.
T&T spells aren't fixed in power, they can be increased in effect when cast by a wizard of higher level. Additionally, as a wizard increases in level he can cast spells of lower level more easily. This is shown by requiring less STR to cast them. A staff also reduces STR needed to cast spells, though no spell can ever be reduced to less than 1 point cost.