Ultimate UNO (v3)
Basically this is complex UNO (double sided cards). There is a real side (the front) and an imaginary side (the back). There are new cards as well.
Colors and ranks:
- Real axis (front): Red, Yellow, Blue, Green, Orange, Purple, Cyan, Pink
- Imaginary axis (back): Maroon, Brown, Scarlet, Gold, Chartreuse, Magenta, Mint, and Teal.
- Colorless and Flex exist for both sides.
- Numbered ranks: 0, 1, λ (1.30), ɸ (1.62), 2, e (2.72), 3, π (3.14), ψ (3.36), 4, 5, 6, τ (6.28), 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, # (matches any number), A (matches 1 or 20).
- The imaginary (back) side has an "i" to indicate that the card is on the imaginary side.
- (In case you didn't know, λ (1.30), known as Conway's Constant, is the algebraic root of a degree-71 polynomial, and ψ (3.36) is the infinite sum of the reciprocals of the Fibonacci numbers, i.e. 1 + 1 + 1/2 + 1/3 + 1/5 + 1/8...)
- Algebraic numbers/roots (√2, √3, √5, √6, √7, 2√2, √10, √11, 2√3, and √13): 4 colors, matches like the regular irrationals or with either of its 4 colors. When played, you can draw 1 card or discard another card if you want (you cannot do both)
Rules:
- Each player starts with 15 cards.
- You can match cards by color or number/symbol as usual. For the irrationals (pi, e, phi, tau, Reciprocal Fibonacci constant (psi), and Conway's Constant (lambda)), they match with the two integers that they lie between (so pi matches with 3 or 4).
- Imaginary cards can match with their real equivalent, so 5i can match with 5.
- Flex cards can match with either of their 2 colors, and Colorless cards only match by number or symbol or with a colored # card.
- If a player has at least 50 cards, they are out of the game.
Action Cards:
- Draw +2: Next player draws 2 cards on the real side.
- Draw +2i: Next player draws 2 cards on the imaginary side.
- Draw +4 and +4i: Next player draws 4 cards on the indicated side.
- Discard -2: Discard 2 cards.
- Target +2 and +2i: Choose a player to draw 2 cards on the indicated side.
- Reverse: Reverse the direction of the player order.
- Skip: Skip the next player.
- Flip: All players flip their cards.
- Loot Box: Draw the indicated number of cards (Silver=4, Gold=8, Diamond=12, Astatine=16) and pick 3 cards that you want to add to your hand.
- Variable X: Is a colored card. When played, roll a d20 to set its value. The next card must match that value (including irrationals).
- Discard All: Discard all cards of that color.
- +15 and +15i: Next player draws 15 cards on the indicated side. There is only one of each, and their colors are red (+15) and scarlet (+15i). Have mercy on thee.
- Unlucky 13(i): There is only one of each, and their colors are yellow (13) and gold (13i). They cannot be played, and instead if you play a yellow or gold card then you draw 4 cards on the indicated side.
- Swap 7(i): Matches like a regular 7 or 7i. When played, swap hands with a player of your choice.
- Swap 0: Matches like a regular 0. When played, all players swap hands clockwise.
- +3(i) or Dare: Perform the dare or draw 3 cards on the indicated side.
- Numberless Card: This can only match by colors. Exists for both sides.
- Colorless Numberless Card: Cannot be played, unless you have the -2, Wild -4, or Wild /2.
- Wild: Pick the color that continues play.
- Imaginary Wild: Pick the imaginary side color that continues play.
- Wild +6 and +6i: Next player draws 6 cards on the indicated side.
- Wild +10 and +10i: Next player draws 10 cards on the indicated side.
- Wild Draw 4+4i: Next player draws 4 cards on the real side and 4 on the imaginary side.
- Wild -4: Discard 4 cards.
- Wild /2: Halve the number of cards in your hand (rounded up).
- Wild x2: Double the number of cards in your hand.
- Wild x2i: Combination of Flip and Wild x2.
- Numerical Wild: When played, choose a number (including irrationals, imaginary, #, and A). Next player should play a card with the chosen number (you cannot play 1 or 20 if someone picks A).
- Wild Draw Royal Flush: Next player draws a 0, 20, A, +4, and +4i.
- Wild Domino Chain: Next player draws 1 card, then the next player after him/her draws 2, and so on until everyone but you has drawn cards.
- Wild Go Fish: Basically the same as Wild Color Roulette. Pick a side and color, then the next player draws cards until he/she finds that color.
- Wild Blackjack Duel: Each player shows 3 of their number cards and the person with the higher total wins while the loser draws 4 cards. Totals cannot go over 42, A and # are worth 21, and imaginary cards count as their real equivalent. Decimal scores are allowed.
- Wild Annihilate: Choose a player to draw cards until he/she has 49.