|  | 61 | ✓resolved | Don't let a line point to the same city/state that it starts | Gemini XI | Christopher Peplin | about 15 years old | 
      
        |  | 62 | ✓resolved | Add AJAX buttons to join/switch/leave games | Apollo 10 | Christopher Peplin | almost 15 years old | 
      
        |  | 63 | ✓resolved | Warn user when switching or leaving a game | Apollo 10 | Christopher Peplin | almost 15 years old | 
      
        |  | 64 | ✓resolved | Add current cash attribute to state | Gemini X | Christopher Peplin | about 15 years old | 
      
        |  | 65 | ✓resolved | Create model helper to get current state | Gemini X | Christopher Peplin | about 15 years old | 
      
        |  | 66 | ✓resolved | Default games to unlimited players | Gemini X | Christopher Peplin | about 15 years old | 
      
        |  | 67 | ✓resolved | Create slider view helper | Gemini X | Christopher Peplin | about 15 years old | 
      
        |  | 68 | ✓resolved | Create model helper to get min/max for a field | Gemini X | Christopher Peplin | about 15 years old | 
      
        |  | 69 | ✓resolved | Figure out how much fuel a generated used since a point in time | Gemini XII | Christopher Peplin | about 15 years old | 
      
        |  | 70 | ✓resolved | Determine cost of an amount of fuel | Gemini XII | Christopher Peplin | about 15 years old | 
      
        |  | 71 | ✓resolved | Deduct cost of all fuel used since a time from the state's cash | Gemini XII | Christopher Peplin | about 15 years old | 
      
        |  | 72 | ✓resolved | Update market prices based on fuel demand | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 73 | ✓invalid | Determine supply for each market | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 74 | new | Randomly determine if a research advancement should happen | Future Work | Christopher Peplin | about 15 years old | 
      
        |  | 75 | ✓resolved | Add main 'step' method to Game | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 76 | ✓resolved | Add initial market prices when a game is created | Gemini XII | Christopher Peplin | about 15 years old | 
      
        |  | 77 | ✓resolved | Confirm that stepping each object individually will maintain consistency | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 78 | ✓resolved | Add sensible page titles to all views using page title helper | Apollo 7 | Christopher Peplin | almost 16 years old | 
      
        |  | 79 | ✓resolved | Modify page title helper to change browser page title | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 80 | ✓resolved | Add 'stepped_at' attribute to technical component | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 81 | ✓resolved | Add 'stepped_at' attribute to city | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 82 | ✓resolved | Add 'stepped_at' attribute to state | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 83 | ✓resolved | Add 'step' method to technical component | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 84 | ✓resolved | Add 'step' method to city | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 85 | ✓resolved | Add 'step' method to state | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 86 | ✓invalid | Formulate integral to compute total cost | Apollo 7 | Christopher Peplin | about 15 years old | 
      
        |  | 87 | ✓resolved | Construct system-wide MC curve, including all generators | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 88 | ✓resolved | Set operating level automatically based on marginal cost curve and current demand | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 89 | ✓resolved | Add method to Market to get average price across all games | Apollo 4 | Christopher Peplin | about 15 years old | 
      
        |  | 90 | ✓resolved | Rename 'average_price' field on Market to 'initial_price' to step out from under the new average_price method | Apollo 4 | Christopher Peplin | about 15 years old |